package com.lscdu.gulimall.ruoyi_springboot.utis.config;

import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.JSONReader;
import com.alibaba.fastjson2.JSONWriter;
import com.alibaba.fastjson2.filter.Filter;
import com.lscdu.gulimall.ruoyi_springboot.utis.constant.Constants;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationException;

import java.nio.charset.Charset;

/**
 * @author 啊昌
 * @date 2024/9/12 22:35
 * FastJson2JsonRedisSerializer TODO
 */
public class FastJson2JsonRedisSerializer<T> implements RedisSerializer<T> {
	public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");

	static final Filter AUTO_TYPE_FILTER = JSONReader.autoTypeFilter(Constants.JSON_WHITELIST_STR);

	private Class<T> clazz;

	public FastJson2JsonRedisSerializer(Class<T> clazz) {
		super();
		this.clazz = clazz;
	}

	@Override
	public byte[] serialize(T t) throws SerializationException {
		if (t == null) {
			return new byte[0];
		}
		return JSON.toJSONString(t, JSONWriter.Feature.WriteClassName).getBytes(DEFAULT_CHARSET);
	}

	@Override
	public T deserialize(byte[] bytes) throws SerializationException {
		if (bytes == null || bytes.length <= 0) {
			return null;
		}
		String str = new String(bytes, DEFAULT_CHARSET);

		return JSON.parseObject(str, clazz, AUTO_TYPE_FILTER);
	}
}

